Wood-gas generator.



No. 665,853. Patented lan'. 8, |90I. 0.-". HDGUE.

WO0D V(aAS GENEBATUB.

(Application led Nov. 10, 1899.)

(No Ilodel.)

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UNITED STATES PATENT OFFICE.

DENT H. HOGUE, OF TACOMA, WASHINGTON.

WOOD-GAS GENERATOR.

SPECIFICATION forming part of Letters Patent No. 665,853, dated January 8, 1901. Application filed November 10,1899. Serial No. 736,527. (No model.)

T0 all whom, it may concern:

Be it known that I, DENT HAs'rINGs HOGUE, a citizen of the United States, residing at Tacoma, in the county of Pierce and State of Washington, have invented certain new and useful Improvements in Devices for Making Illuminating and Fuel Gas from Wood, of which the following is a specification.

The object of my invention is to manufacture a pure and highly-inflammable gas from wood, preferably for illuminating purposes, though for fuel or other uses, if desired. vI attain this object by l(he apparatus illustrated in the accompanying drawings, in which- Figure lis a partial longitudinal section of my device connected with a storage-tank shown in elevation. Fig. 2 is a top view of my device and the tank. Fig. 3 is a crosssection of my device, showing the relative position of the retorts and their connections.

Similar letters refer to similar parts in the several views.

My invention comprises three retorts A, C, and E, placed within the fire-box of a stove or furnace H. The retort A is connected with retort C by means of a coil-pipe B, passing through a condenser a, and C is connected with E by a pipe D, inclosed within a tubular condensing-chamber ct. Each retort has one end connected with the side or end of the lire-box and is provided with a suitable door that may be made air-tight when shut. These doors give access to the inside of the retorts from the outside of the stove or furnace.

To make gas with my improved device, the retort A is filled with Wood and the door of each retort is shut tight. A fire is made in l-I, and the heat therefrom thoroughly roasts the gaseous substances out of the wood. The gas thus produced escapes through the pipecoil B, where the condenser causes the heavier substances to partially run back into A until more fully roasted. The lighter gaseous substances pass into C, where they are again highly heated,and the finer gaseous vapors are driven through the pipe D into E, the heavier sediments settling in C. The condenser a has a tendency to further separate the impurities from the gas, and on entering E the gas is again highly heated and finally passes out through the pipe F into the gas-receiver Gr, leaving a residue in E that is a purer quality of creosote than is obtained by any other process of making wood-gas.

It is to be observed that the connectingpipes are so arranged that gaseous vapors are made to pass and are given a maximum exposure to the heat. The combination of retorts and condensers not only produces a more complete separation of ,the gas from the coarser substances, but more fully utilizes the furnace heat than in similar devices heretofore used in making wood-gases.

The size and proportion of the several parts of my device are not limited to those indicated in the drawings, but may be varied to obtain the best results from different woods and to the size of the plant desired in any building or locality.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. A woodgas generator, comprising a furnace, a wood-retort and multiple tar-retorts all inclosed within the same furnace, a pipe connecting the Wood-retort with one of the tar-retorts, said pipe being arranged to permit a portion of the tar distillate to fall back into the wood-retort and another portion to pass over into the tar-retort a pipe connecting one tar-retort with the other for the passage of the distillate from one to the other, and a condenser-jacket surrounding each of the pipes connecting the retorts, substantially as and for the purposes described.

2. A wood-gas generator, comprising a furnace, a wood-retort and multiple tar-retorts located within the same furnace, the tar-retorts being on opposite sides of the wood-retort, a pipe extending from the central woodretort communicating with one of the tar-retorts at one end thereof, a condensing-jacket inclosing said pipe, a second pipe extending across the wood-retort and connecting the two tar-retorts, a condensing-jacket inclosing said pipe, and a pipe for conducting the vapors from the second tar-retort, substantially as described. V

In testimony whereof I afx my signature in the presence of two witnesses.

D. I-I. HOGUE.

Witnesses:

S. F. BULLARD, EMILE S. LEMME.

from end to end of each retort IOO 

